Traction-wheel



(No Model) F. F. LANDIS.

TRACTION WHEEL.

No. 367,303. Patented July 26, 1887.

w/r/vzssss O O nvvmvma fiamflam W Q Z31 cQjrza/sm UNITED STATES PATENTOFFICE.

FRANK F. LANDIS, OF WAYNESBOROUGH, PENNSYLVANIA.

TRACTION-WHEEL.

SPBCI'EIGATIQN forming part of Letters Patent No. 367,303, dated July26, 1887.

Application filed Apr-i127, 1886. Serial No. 200,253; (No model.)

To aZZwhom it may concern: I

Be it known that I, FRANK F. LANDIS, a citizen of the United States,residing at Waynesborough, in the-county of Franklin and State ofPennsylvania, have invented certain new and useful Improvements inTraction-Wheels, of which the following isa specitication, referencebeing had therein to the accompanying drawings.

This invention relates to tractionwheels for traction-engines and othermachines; and theobjects of my improvement are to providetraction-wheels with cleats of peculiar nature and shape incross-section, and to protect against wear and displacement thefastening uniting them to the tire of said wheels. I attain theseobjects by the construction illustrated in the accompanying drawings, inwhich- .7

Figure 1 represents, in side view and partly in section, a portion of awheel-tire providedwith cleats formed in accordance with my invention.Fig. 2 is a top view of the same. Figs. 3 and 4 are top views of aportion of a wheeltire provided with cleats formed in accordance with myinvention, but showing modified arrangements. Fig.5 is a top view of oneof the cleats upon a larger scale. Fig. 6 is a transverse verlicalsection on line 00 m of Fig. 5, but upon a still larger scale.

After many experiments I have found that to produce ordinary flat cleatshaving sufficient strength their face should not be less than two incheswide, on account of .the reduced section at the points where the rivetspass through the cleat, and that when made wide enough to have theproper strength they present too much of flat surface, that preventsthem being pressed sufficiently into the ground to prevent slipping ofthe wheel, particularly when the edges of the cleats are partly wornaway; andin that case, also, the end of the rivets becomes exposed andisliable to be forced inwardby coining in contact with stones. Onehalfof the weight of the traction-engine often bearing upon the end of arivet,it drives the latter into the cleat, forces its head away from theinside of the tire, and loosens the cleat,

and when once loose and rattling the cleat soon drops off and isgenerally lost. My object is to obviate these defects by the cleats ofwrought or malleable iron, or of steel, made plain or hardened, ashereinafter described in connection with the drawings.

The cleats A are constructed with a flat base, a, slightlyinwardlybeveled sides of, a top having flat surfaces a adjacent to thecorners, and a central groove, a, extending the whole length of thecleat. This groove I prefer to have made in a continuous curve orconcavity, extending from the surfaces a so as to guard against enteringangles, that produce weak points from which longitudinal fractures areliable to start in the metal. As the bearing surfaces or flanges a arecomparatively small to carry traction-engines and other heavy machines,that part a of the metal is tempered or hardened by means well known toironworkers', while the lower half, or more, is kept soft or ductile,and in the central groove, a, are bored or formed at suitable intervalsopenings a to receive rivets b, by which the cleats are secured tothetire B of the vehicle.

Having now fully described my invention, I claim-- 1. In combinationwith a traction-wheel tire, flangeless cleats having a fiat base andprovidedwvith a longitudinal groove extending the whole length thereof,and rivet-holes in said groove, and rivets passing through the bottom ofsaid groove and through the tire, substantially as and for the purposedescribed.

2. As a new article of manufacture, traction'wheel cleats having a. flatbase and provided with a longitudinal groove extending the whole lengththereof, and rivet-holes in said groove, and'liaving thewearing-faces onthe sides of said groove hardened, substantially as and for the purposedescribed.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK F. LANDIS.

